This is where the harmonic balancer comes in. The circular device, made of rubber and metal, is bolted at the front end of the crankshaft to help absorb vibrations. It's usually connected to the crank pulley, which drives accessories like the air conditioner.
Additional costs: Ground water wells can also be tested for radon, then, if needed, can get a water radon mitigation system installed. Installing a water radon mitigation system runs from $1,000-$4,500, and maintenance runs $0 to $150 annually.
The Average Cost for Radon Mitigation. The first step in radon mitigation is testing for the presence of the gas. There are different types of radon tests. Only a licensed radon tester can perform such a test, and a homeowner can expect to pay around $200.The average cost of testing and installation of a radon mitigation system is $758, explains the Home Advisor website. Most homeowners spent between $644 and $872 for radon testing and mitigation of the gas.here are different types of radon tests. Only a licensed radon tester can perform such a test, and a homeowner can expect to pay around $200. The average cost of testing and installation of a radon mitigation system is $758, explains the Home Advisor website.